52 citations · 114 across the 11 of their papers we have counts for
6 papers · 1 filter
E-XQR-30: The evolution of MgII, CII and OI across 2<z<6
Alma Maria Sebastian, Emma Ryan-Weber, Rebecca L. Davies +12
Intervening metal absorbers in quasar spectra at can be used as probes to study the chemical enrichment of the Universe during the Epoch of Reionization (EoR). This work pr…
XQz5: A New Ultraluminous z5 Quasar Legacy Sample
Samuel Lai, Christopher Onken, Christian Wolf +2
Bright quasar samples at high redshift are useful for investigating active galactic nuclei evolution. In this study, we describe XQz5, a sample of 83 ultraluminous quasars in the r…
Virial Black Hole Mass Estimates of Quasars in the XQ-100 Legacy Survey
Samuel Lai, Christopher A. Onken, Christian Wolf +4
The black hole (BH) mass and luminosity are key factors in determining how a quasar interacts with its environment. In this study, we utilise data from the European Southern Observ…
New quasar proximity zone size measurements at using the enlarged XQR-30 sample
Sindhu Satyavolu, Anna-Christina Eilers, Girish Kulkarni +15
Proximity zones of high-redshift quasars are unique probes of their central supermassive black holes as well as the intergalactic medium in the last stages of reionization. We pres…
Characterising SMSS J2157--3602, the most luminous known quasar, with accretion disc models
Samuel Lai, Christian Wolf, Christopher Onken +1
We develop an accretion disc (AD) fitting method, utilising thin and slim disc models and Bayesian inference with the Markov-Chain Monte-Carlo approach, testing it on the most lumi…
Discovery of the most luminous quasar of the last 9 Gyr
Christopher A. Onken, Samuel Lai, Christian Wolf +8
We report the discovery of a bright (g = 14.5 mag (AB), K = 11.9 mag (Vega)) quasar at redshift z = 0.83 -- the optically brightest (unbeamed) quasar at z > 0.4. SMSS J114447.77-43…